This is a note to let you know that I've just added the patch titled
spi: zynqmp-gqspi: fix clock imbalance on probe failure
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-zynqmp-gqspi-fix-clock-imbalance-on-probe-failure.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1527b076ae2cb6a9c590a02725ed39399fcad1cf Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date: Thu, 22 Jun 2023 10:24:35 +0200
Subject: spi: zynqmp-gqspi: fix clock imbalance on probe failure
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
commit 1527b076ae2cb6a9c590a02725ed39399fcad1cf upstream.
Make sure that the device is not runtime suspended before explicitly
disabling the clocks on probe failure and on driver unbind to avoid a
clock enable-count imbalance.
Fixes: 9e3a000362ae ("spi: zynqmp: Add pm runtime support")
Cc: stable@xxxxxxxxxxxxxxx # 4.19
Cc: Naga Sureshkumar Relli <naga.sureshkumar.relli@xxxxxxxxxx>
Cc: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/Message-Id: <20230622082435.7873-1-johan+linaro@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-zynqmp-gqspi.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -1342,9 +1342,9 @@ static int zynqmp_qspi_probe(struct plat
return 0;
clk_dis_all:
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_set_suspended(&pdev->dev);
pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
clk_disable_unprepare(xqspi->refclk);
clk_dis_pclk:
clk_disable_unprepare(xqspi->pclk);
@@ -1368,11 +1368,15 @@ static void zynqmp_qspi_remove(struct pl
{
struct zynqmp_qspi *xqspi = platform_get_drvdata(pdev);
+ pm_runtime_get_sync(&pdev->dev);
+
zynqmp_gqspi_write(xqspi, GQSPI_EN_OFST, 0x0);
+
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
clk_disable_unprepare(xqspi->refclk);
clk_disable_unprepare(xqspi->pclk);
- pm_runtime_set_suspended(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
}
MODULE_DEVICE_TABLE(of, zynqmp_qspi_of_match);
Patches currently in stable-queue which might be from johan+linaro@xxxxxxxxxx are
queue-6.5/spi-zynqmp-gqspi-fix-clock-imbalance-on-probe-failure.patch
